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发明授权
CN104343829B 用于磁悬浮转子系统中的球轴承类型的辅助轴承 有权

用于磁悬浮转子系统中的球轴承类型的辅助轴承
摘要：
一种组件，包括旋转轴(104，114)，其相对于固定座(105，115)通过具有中间径向空气间隙的至少一个主动磁力轴承和包括同轴布置的第一和第二环形表面(124，123)的至少一个辅助轴承(118)来支撑，所述同轴布置的第一和第二环形表面(124，123)中的一个(124)与所述固定座(105，115)和所述旋转轴(104，114)中的一个限定了间隙(E2)，所述间隙(E2)比所述中间径向空气间隙小，并且所述同轴布置的第一和第二环形表面(124，123)的另一个(123)与所述固定座(105，115)和所述旋转轴(104，114)的另一个构造为一体。辅助轴承(118)包括相对彼此具有偏移量的第一球轴承和第二球轴承以增加启动转矩。
摘要（英）：

An assembly comprises a rotating shaft (104, 114) supported with respect to a stationary housing (105, 115) by at least one active magnetic bearing presenting a mean radial air gap and at least one auxiliary bearing (118) comprising first and second coaxially arranged annular surfaces (124, 123), one (124) of the first and second coaxially arranged annular surfaces (124, 123) defining a clearance (E2) with one of the stationary housing (105, 115) and the rotating shaft (104, 114), the clearance (E2) being less than the mean radial air gap and the other (123) of the first and second coaxially arranged annular surfaces (124, 123) being integral with the other one of the stationary housing (105, 115) and the rotating shaft (104, 114). The auxiliary bearing (118) comprises a first ball bearing and a second ball bearing having a misalignment with respect to each other in order to increase the starting torque.

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